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Method and device for UE-base station communication by using unlicensed spectrum

a technology of unlicensed spectrum and communication method, which is applied in the direction of wireless communication, transmission path sub-channel allocation, transmission path division, etc., can solve the problems of more difficult to predict/control the interference of unlicensed spectrum, and the difficulty of the licensed spectrum to meet the communication amount, so as to ensure the transmission quality of physical layer signaling and good compatibility

Active Publication Date: 2018-03-13
HEDWIG WIRELESS TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent aims to provide a method and device for transmitting control signaling in LAA using unlicensed spectrum communication. It proposes a mapping method similar to that used in LTE to save PUCCH resource and ensures the transmission quality of physical layer signaling as much as possible while ensuring the transmission of all subframes onSCC. The method is also compatible with existing LTE standards. The technical effect of this patent is to improve the efficiency and reliability of LAA communication.

Problems solved by technology

However, with the sharp increase on the communication amount, especially in some urban areas, it may be difficult for the licensed spectrum to meet the requirement of the communication amount.
Compared to the licensed spectrum, it is more difficult to predict / control the interference on the unlicensed spectrum.
However, the above method has the following problem.

Method used

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  • Method and device for UE-base station communication by using unlicensed spectrum
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  • Method and device for UE-base station communication by using unlicensed spectrum

Examples

Experimental program
Comparison scheme
Effect test

embodiment i

[0072]Embodiment I illustrates a flowchart for scheduling an unlicensed spectrum, as shown in FIG. 1. In FIG. 1, the base station N1 is a serving base station of UE U2.

[0073]For the base station N1, in step S11, the method involves transmitting a first physical layer signaling for scheduling a first carrier on a first sub frame of the first carrier, and transmitting a second physical layer signaling for scheduling the first carrier on a second sub frame of a second carrier.

[0074]For the UE U2, in step S21, the method involves detecting a first physical layer signaling for scheduling a first carrier on a first sub frame of the first carrier, and detecting a second physical layer signaling for scheduling the first carrier on a second sub frame of a second carrier.

[0075]In Embodiment I, the first carrier is deployed on an unlicensed spectrum, the second serving cell is deployed on a licensed spectrum, and the first sub frame and the second frame are two different sub frames. For the UE...

embodiment ii

[0084]Embodiment II is a structure diagram illustrating a processing device in a user equipment, as shown in FIG. 2. In FIG. 2, the processing device 200 in the UE mainly includes a first receiving module 201, a second receiving module 202, and a first transmitting module 203, wherein the modules identified by a square frame F4 (i.e. the second receiving module 202 and the first transmitting module 203) are optional modules.

[0085]The first receiving module 201 is used for detecting a first physical layer signaling for scheduling a first carrier on a first sub frame of the first carrier, and detecting a second physical layer signaling for scheduling the first carrier on a second sub frame of a second carrier.

[0086]In Embodiment, the first carrier is deployed on an unlicensed spectrum, the second serving cell is deployed on a licensed spectrum, and the first sub frame and the second frame are two different sub frames. The physical layer signaling is DCI. For the user equipment, the fi...

embodiment iii

[0092]Embodiment III is a structure diagram illustrating a processing device in a base station equipment, as shown in FIG. 3. In FIG. 3, the processing device 300 of the base station mainly includes a second transmitting module 301, a third transmitting module 302 and a third receiving module 303, wherein the modules identified by a square frame F5 (i.e. the third transmitting module 302 and the third receiving module 303) are optional modules.

[0093]The second transmitting module 301 is used for transmitting a first physical layer signaling for scheduling a first carrier on a first sub frame of the first carrier, and transmitting a second physical layer signaling for scheduling the first carrier on a second sub frame of a second carrier.

[0094]In Embodiment III, the first carrier is deployed on an unlicensed spectrum, the second serving cell is deployed on a licensed spectrum, the first sub frame and the second frame are two different sub frames, and target UEs of the first physical ...

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Abstract

Provided are a method and device for UE-base station communication by using an unlicensed spectrum, the method comprising: a UE detects, on the first sub frame of a first carrier wave, a first physical layer signaling for scheduling the first carrier wave, and detects, on the second sub frame of a second carrier wave, a second physical layer signaling for scheduling the first carrier wave, the first carrier being deployed on the unlicensed spectrum, the second carrier wave being deployed on a licensed spectrum, and the first sub frame and the second sub frame being different sub frames. The present invention disclosure ensures the transmission quality of the physical layer signaling as far as possible, and also ensures that a sub frame on an SCC can be scheduled. In addition, the present invention disclosure reuses an existing LTE CA solution as far as possible, and has good compatibility.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a U.S. National Phase application under 35 U.S.C. § 371 of International Application No. PCT / CN2015 / 085031, filed on Jul. 24, 2015, and claims benefit to Chinese Patent Application No. CN 201410384347.0, filed on Aug. 6, 2014, all of which is hereby incorporated by reference for all purposes. The International Application was published in China on Feb. 11, 2016 as WO 2016019713 A1 under PCT Article 21 (2).BACKGROUND[0002]Technical Field[0003]The present disclosure is related to a scheme adopting an unlicensed spectrum communication in a wireless communication system, and more particular to a communication method and device for an unlicensed spectrum based on Long Term Evolution (LTE).[0004]Related Art[0005]3rd Generation Partner Project (3GPP) defines a time division duplex (TDD) frame structure in a LTE system, as shown in Table 1, wherein D indicates a downlink sub frame, U indicates an uplink sub frame, and S is a sp...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04W72/00H04W72/12H04W16/14H04W72/04H04W74/00H04L1/18
CPCH04W72/1205H04L1/1812H04W74/006H04W72/0453H04W16/14H04L1/18H04L5/001H04L5/0053H04L5/1469H04W72/12
Inventor ZHANG, XIAOBO
Owner HEDWIG WIRELESS TECH LLC